Removable taper attachment for lathes.



H. C. BROWN.

REMOVABLE TAPER ATTACHMENT FOR LATHES.

APPLICATION FILED SEBT. n. 1913.

1, 171 ,767, Patented Feb. 15,1916.

WYTNESSES INVENTOR.

oniucn.

HENRY 0. BROWN, or BROOKLYN, NEW YORK.

REMOVABLE TAPER ATTACHMENT FoR LATHES.

Specification of Letters Patent. I Patented Feb. 15, 1916.

Application filed September 17, 1913. Serial No. 790,260.

. To all'whom it may concerni 'Be it known that I, HENRY C. BnowN, acitizen of the United States, and resident of Brooklyn, in the county ofKings and Stateof New York, have invented certain new and usefulRemovable Taper Attachments for Lathes, of which the following is aspecification.

A taper attachment is used for guiding the'cutting tool away from ortoward the center of revolution of a lathe in combination with thelongitudinal feed, thereby tapering the work to the same angle at whichthe attachment is set. Taper cutting may also be accomplished by settingthe tail center of the lathe horizontally out of line, or by the use ofthe compound rest, both of which are limited in action.

Taper'attachn'i'ents now in use are permanentfixtures to a lathe,requiring inconvenient parts, and have much lost motion, which must beallowed for in using, all of which I have endeavored to overcome in myinvention, the object of ,whichis to provide an easily and quicklyattached I and removed mechanism, the application of which shall in noway injure a lathe, and yet be practically positive in operation. Iattain this in the manner described as follows, referring to theaccompanying drawings, in which like figures represent like parts.

Figure 1 represents the attachment in place on a lathe as it wouldappear from above. Fig. 2 represents one ofthe supportingarms attachedto the inner tracks of a lathe and arched over the outer track to allowthe carriage to pass. Fig. 3 represents the guide-bar. Fig. 4 representsthe guide with the swiveling portion in which the bearing for theadjustable feed screw is located. Fig. '5 represents the adjustablefeedscrew, with the take up collars, blank shaft portion, threadedportion and handwheel. Fig. 6 represents the sleeve bearing, and themost convenient and usual manner of fastening it to the lathe carriage.Fig. 7 represents the splitnut and attaching and adjusting it.

Referring to Fig. 1, a is a supporting arm fastened close in front ofthe headstock of a lathe, to the two inner tracks, by a bolt 7) and astrap 0, and a' is a supporting arm similarly fastened behind thetailstock, and shown in detail in Fig. 2. To allow full travel of thesliderest, the arms tool.

the screws for are arched over the outside track of the lathe. Theoutwardly extended portions of the supporting arms a and a "are providedwith slots n and n',-for the reception of the bolts j and 9", whichextend-through the ends of the guide bar 5 andbind'it rigidly in placeon the under side of the supportingarms, after it has been set to thedesired angle. The guide (Z rides on the guide-bar i, and is provided jwith-downwardly extended sides, 70,? shown in Figs. 4L and 5, which actasa gib to keep it in place,

and resist the pull of the cutting The upper portion cZ of the guide fdis provided with a transverse bearing q for. the reception of-the end ofthe adjustable feedscrew V6,. and is also let into the top of the guide05 Fm which allow it'to swivel on the guide' cl without alteration toits central position, and is fastened in place loosely by the screws 7'.The adjusting screw e is provided with a journal fittinginto the bearingq in the guide d in which-it revolves freely, and is also furnished witha shoulder by annular steps s washer t and nut u to'take up endwise lostmotion.-

'- The shaft e of-the screw e passes it and fastened securely therebythe bolts 7) and straps c, after which, the guide d,

screw 6, sleeve .f and nut g, which 7 Y may remain assembled, are placedin posltion, and the sleeve f is fastened to the a and Fa areplaced. inposition on the lathe end of theslides of the Saddle Vc, by the screw m,which draws a gib tight, and b fastening the nut g, to the side'of thetool rest Z, by the screw it. The crossfeed "screw of the lathe is thendisconnected or removed altogether, after which the guide bar 2' isplaced under the guide cl and fastened lightly to the arms a and a, andset at the required angle, either by The 9 for receiving the threadedportion of the Kings and State of New York, this 15th shaft, said nutprovided With means for day of September, A. D. 1913. I preventing endplay of the screw shaft through it, and said shaft having an oper- HENRYBROWN 5 ating hand Wheel on its forward end, all Witnesses:

for the purpose specified. FRANK E. HoLLoWAY,

Signed at Brooklyn, in the county of H. T." OLTMAN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents} Washington; D. C.

